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Category Archives: VMware
SQL query to locate VMs in vCenter server databasee
Here are some SQL commands that may come useful if you are looking for a specific VM when vCenter server goes down. You can run a SQL query to find a VM directly in the database. It will tell you … Continue reading →...
ESXi no free space left on device tmp / root is Full
Checking for insufficient inodes:ESXi 5.0: stat -f /ESXi 5.1+: localcli system visorfs ramdisk listLinux OS: df -i Review the size of these directories:The /vmimages/ directory is used to store operating system install files such as the V...
Injecting Async drivers into a VMware ESXi 6 ISO
I was tasked with upgrading our ESXi 5.x environment to ESXi 6 Update 2. The first thing I checked was is if the new ESXi 6 Update 2 image contains the network drivers for the ESXi hosts that I will … Continue reading →...
Posted in VMware
Tagged Adding the async driver to the ESXi installation ISO bundle in ESXi (2137851), adding vib offline bundle vmware esxi iso, Customize the VMware ESXi 5 installation media by adding the latest patches using Image Builder, How do I inject drivers/vibs into and esxi 6.5 iso, installing async inbox drivers vmware esxi iso
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Deploying VMware NSX 6.2 in my Lab
When NSX was released i really wanted to set this up in my lab and get a closer look at the features. Once you deploy the NSX Manger appliance you will see an additional section in the web client called … Continue reading →...
How to clone a single disk on a VM running in VMware ESXi
-ESXi Utility to clone a single VMware virtual disks. SSH to the ESXi host and run the below command. -On a powered OFF VM run it on the disk.vmdk (not the disk-flat.vmdk) -On a Powered ON VM first create a … Continue reading →...
Understanding Historical “CPU Ready” statistics in VMware vCenter server
One of the most confusing performance metrics in vCenter server is the CPU “Ready” metric. Part of the reason is that this metrics shows up as a “Summation in milliseconds”. In additional to that the threshold changes depend...
Posted in VMware
Tagged convert between CPU ready summation and CPU ready percentage values, Converting between CPU summation and CPU % ready values, CPU ready %, CPU ready summation value, To convert between the CPU ready summation value in vCenter's performance charts and the CPU ready % value that you see in esxtop, you must use a formula.
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Boot Windows Server 2012 on ESXi 4.1
I needed to create a Windows Server 2012 R2 on one of our older ESXi hosts and quickly found out that ESXi 4.1 does not support Server 2012 as a guest OS. The newest guestOS supported is Windows 2008 R2. … Continue reading →...
Creating a Group Managed Service Account (gMSA) for vCenter service
How to create a Group Manged Service Account for a service ================================================= Quick steps how to create a Group Managed Service Account in Windows Server 2012 R2. This is useful if your company follows a security poli...
iPerf Network performance comparison between Virtual Machines on ESXi6
I finally found some time to run a series of iPerf network performance tests between Windows server 2008 R2, Windows 2012 and a Linux Debian virtual machines. The tests compare bandwidth throughput between vmxnet3, e1000 going through a 1Gbit and &he...
Posted in Linux, Networking, VMware
Tagged bandwidth performance test vmware vsphere 6, change default window size linux tcp stack, comparison between e1000 vmxnet3 1gbit 10gbit jumbo frames mtu 9000, esxi slow network performance, iperf linux TCP window size: 1.00 MByte (WARNING: requested 512 KByte), network throughput performance, tcp tunning linux vm increase default window size, vm to vm network throughput, vmware iperf tests esxi6
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